Make test vectors 'static const'

* cipher/arcfour.c (selftest): Change test vectors to 'static const'.
* cipher/blowfish.c (selftest): Ditto.
* cipher/camellia-glue.c (selftest): Ditto.
* cipher/cast5.c (selftest): Ditto.
* cipher/des.c (selftest): Ditto.
* cipher/rijndael.c (selftest): Ditto.
* tests/basic.c (cipher_cbc_mac_cipher, check_aes128_cbc_cts_cipher)
(check_ctr_cipher, check_cfb_cipher, check_ofb_cipher)
(check_ccm_cipher, check_stream_cipher)
(check_stream_cipher_large_block, check_bulk_cipher_modes)
(check_ciphers, check_digests, check_hmac, check_pubkey_sign)
(check_pubkey_sign_ecdsa, check_pubkey_crypt, check_pubkey): Ditto.
--

Some test vectors have been defined without 'static' and thus end up being
initialized on runtime. Change these to 'static'. Also change test vectors
const where possible.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
mpi: Add function gcry_mpi_set_opaque_copy.

* src/gcrypt.h.in (gcry_mpi_set_opaque_copy): New.
* src/visibility.c (gcry_mpi_set_opaque_copy): New.
* src/visibility.h (gcry_mpi_set_opaque_copy): Mark visible.
* src/libgcrypt.def, src/libgcrypt.vers: Add new API.
* tests/mpitests.c (test_opaque): Add test.

Signed-off-by: Werner Koch <wk@gnupg.org>
ecc: Fully implement Ed25519 compression in ECDSA mode.

* src/ec-context.h (mpi_ec_ctx_s): Add field FLAGS.
* mpi/ec.c (ec_p_init): Add arg FLAGS.  Change all callers to pass it.
* cipher/ecc-curves.c (point_from_keyparam): Add arg EC, parse as
 opaque mpi and use eddsa decoding depending on the flag.
(_gcry_mpi_ec_new): Rearrange to parse Q and D after knowing the
curve.

Signed-off-by: Werner Koch <wk@gnupg.org>
ecc: Require "eddsa" flag for curve Ed25519.

* src/cipher.h (PUBKEY_FLAG_ECDSA): Remove.
* cipher/pubkey-util.c (_gcry_pk_util_parse_flaglist): Remove "ecdsa".
* cipher/ecc.c (ecc_generate, ecc_sign, ecc_verify): Require "eddsa" flag.
* cipher/ecc-misc.c (_gcry_ecc_compute_public): Depend "eddsa" flag.
* tests/benchmark.c, tests/keygen.c, tests/pubkey.c
* tests/t-ed25519.c, tests/t-mpi-point.c: Adjust for changed flags.
--

This changes make using ECDSA signatures the default for all curves.
If another signing algorithm is to be used, the corresponding flag
needs to be given.  In particular the flags "eddsa" is now always
required with curve Ed25519 to comply with the specs.  This change
makes the code better readable by not assuming a certain signature
algorithm depending on the curve.

Signed-off-by: Werner Koch <wk@gnupg.org>